Cov nyhuv ntawm vulcanization ntawm cov qauv thiab cov khoom:
Nyob rau hauv cov txheej txheem ntawm cov khoom siv roj hmab, vulcanization yog cov txheej txheem kawg.Hauv cov txheej txheem no, cov roj hmab tau dhau los ua cov tshuaj lom neeg tsis sib haum, hloov los ntawm cov qauv linear mus rau lub cev zoo li tus qauv, poob lub plasticity ntawm cov roj hmab sib xyaw thiab muaj cov elasticity siab ntawm cross-linked roj hmab, yog li tau txais lub cev zoo thiab txhua yam. Cov khoom, kub tsis kam Qhov kev ua tau zoo, hnyav tsis kam thiab corrosion kuj txhim kho kev siv tus nqi thiab kev siv ntau yam ntawm cov khoom siv roj hmab.
Ua ntej vulcanization: linear qauv, intermolecular kev cuam tshuam los ntawm van der Waals quab yuam;
Khoom: zoo plasticity, siab elongation, thiab solubility;
Thaum lub sij hawm vulcanization: cov molecule pib, thiab cov tshuaj tiv thaiv kev sib txuas tshwm sim;
Tom qab vulcanization: network qauv, intermolecular nrog tshuaj bonds;
Qauv:
(1) Chemical bond;
(2) Txoj hauj lwm ntawm kev sib txuas sib txuas;
(3) Qib kev sib txuas;
(4) Kev sib txuas;.
Khoom:
(1) Mechanical zog (lub zog elongation tas li, hardness, tensile zog, elongation, elasticity);
(2) Lub cev muaj zog
(3) Tshuaj stability tom qab vulcanization;
Kev hloov hauv cov khoom ntawm cov roj hmab:
Noj cov roj hmab ntuj ua piv txwv, nrog rau qhov nce ntawm vulcanization degree;
(1) Kev hloov pauv hauv cov khoom siv kho tshuab (elasticity. Tear strength. elongation strength, tear strength. hardness) nce (elongation. compression set. Fatigue heat generation) txo
(2) Kev hloov pauv hauv lub cev, huab cua permeability thiab dej permeability txo, tsis tuaj yeem yaj, tsuas yog o, txhim kho cov cua sov.
(3) Kev hloov hauv tshuaj lom neeg ruaj khov
Ntxiv tshuaj stability, yog vim li cas
a.Cov tshuaj tiv thaiv kev sib txuas ua rau cov tshuaj lom neeg ua haujlwm lossis cov atoms tsis muaj nyob, ua rau nws nyuaj rau cov tshuaj tiv thaiv kev laus mus ntxiv.
b.Cov qauv network cuam tshuam qhov diffusion ntawm qis molecules, ua rau nws nyuaj rau cov roj hmab radicals kom diffuse.
Kev xaiv thiab kev txiav txim siab ntawm Rubber Vulcanization Conditions
1. Vulcanization siab
(1) Kev kub siab yuav tsum tau siv thaum cov khoom siv roj hmab yog vulcanized.Lub hom phiaj yog:
a.Tiv thaiv cov roj hmab los ntawm kev tsim cov npuas thiab txhim kho lub compactness ntawm cov roj hmab;
b.Ua cov khoom siv roj hmab ntws thiab sau cov pwm ua cov khoom nrog cov qauv ntshiab
c.Txhim kho qhov adhesion ntawm txhua txheej (nplaum txheej thiab txheej ntaub lossis txheej hlau, txheej ntaub thiab ntaub txheej) hauv cov khoom, thiab txhim kho lub cev (xws li flexural resistance) ntawm vulcanizate.
(2) Feem ntau hais lus, kev xaiv vulcanization siab yuav tsum tau txiav txim siab raws li cov khoom lag luam, mis, plasticity thiab lwm yam.
(3) Raws li txoj cai, cov cai hauv qab no yuav tsum tau ua raws li: cov yas yog loj, lub siab yuav tsum me dua;cov khoom thickness, tus naj npawb ntawm cov khaubncaws sab nraud povtseg, thiab cov qauv complex yuav tsum loj dua;Lub siab ntawm cov khoom nyias yuav tsum me dua, thiab txawm tias lub siab ib txwm siv tau
Muaj ntau txoj hauv kev ntawm vulcanization thiab pressurization:
(1) Lub twj tso kua mis hydraulic hloov lub siab mus rau pwm los ntawm lub tiaj vulcanizer, thiab tom qab ntawd hloov lub siab mus rau cov roj hmab sib xyaw los ntawm pwm
(2) Ncaj nraim los ntawm vulcanizing nruab nrab (xws li chav)
(3) Pressurized los ntawm compressed cua
(4) Kev txhaj tshuaj los ntawm lub tshuab txhaj tshuaj
2. Vulcanization kub thiab kho lub sij hawm
Qhov kub ntawm vulcanization yog qhov yooj yim tshaj plaws rau cov tshuaj tiv thaiv vulcanization.Lub vulcanization kub tuaj yeem cuam tshuam ncaj qha rau vulcanization ceev, cov khoom zoo thiab cov txiaj ntsig kev lag luam ntawm kev lag luam.Lub vulcanization kub yog siab, vulcanization ceev ceev, thiab cov efficiency ntau lawm;txwv tsis pub, qhov ntau lawm efficiency yog tsawg.
Qhov kub ntawm vulcanization tuaj yeem ua rau muaj teeb meem hauv qab no;
(1) Ua kom tawg ntawm cov roj hmab molecular saw thiab vulcanization reversion, ua rau txo qis hauv cov khoom siv roj hmab sib xyaw.
(2) Txo lub zog ntawm textiles hauv cov khoom siv roj hmab
(3) Lub sij hawm scorch ntawm cov roj hmab sib xyaw yog luv, lub sij hawm sau yog txo, thiab cov khoom yog ib nrab tsis muaj kua nplaum.
(4) Vim tias cov khoom tuab yuav ua rau qhov sib txawv ntawm qhov sib txawv ntawm sab hauv thiab sab nraud ntawm cov khoom, ua rau tsis sib xws vulcanization
Post lub sij hawm: May-18-2022